72639214 has 16 divisors (see below), whose sum is σ = 112211568. Its totient is φ = 35240832.

The previous prime is 72639211. The next prime is 72639239. The reversal of 72639214 is 41293627.

It is a self number, because there is not a number n which added to its sum of digits gives 72639214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72639211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30909 + ... + 33175.

It is an arithmetic number, because the mean of its divisors is an integer number (7013223).

Almost surely, 2^72639214 is an apocalyptic number.

72639214 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

72639214 is a deficient number, since it is larger than the sum of its proper divisors (39572354).

72639214 is a wasteful number, since it uses less digits than its factorization.

72639214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739.

The product of its digits is 18144, while the sum is 34.

The square root of 72639214 is about 8522.8641899305. The cubic root of 72639214 is about 417.2442675930.

The spelling of 72639214 in words is "seventy-two million, six hundred thirty-nine thousand, two hundred fourteen".